External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:131898-1
- Publication
- Handbuch der Kakteenkultur.
- Collation
- 186
- Date of Publication
- dt. 1907; issued Nov-Dec 1906
- Family as entered in IPNI
- Cactaceae
Original Data
- Remarks
- E. denudatus, var. intermedius, Hildm